Which of the following may be used to determine brake pipe pressure at the rear of a train?

• A. An accurate gauge
• B. An EOT
• C. A distributed locomotive
• D. All three of the above

Answer: (D)

This question tests how brake pipe pressure at the rear of a train can be determined using different tools. An accurate gauge at the rear provides a direct measurement of the pressure there. The End-of-Train device is designed to monitor and report rear brake pipe pressure back to the crew, so it can tell you the pressure at the tail. In a distributed locomotive setup, sensors and communication along the train can also provide rear-end brake pipe data, allowing determination of the rear pressure. Because each of these methods can yield the rear brake pipe pressure, all three may be used, making “All three of the above” the best choice.